Help with Singles

Hi everyone,
I've been a doubles players since I started playing tennis. I found out yesterday, however, that my coach has placed me on the singles ladder, right before we have a meet against the league's no.#1 team.
I think my biggest problem will be staying consistent over the course of a match. When I asked my captain for some tips, he told me "Sometimes you just have to suck it up and push until your opponent makes an error."

Is there anything else I should know for making the transition from doubles to singles?